SMART BLIND STICK WITH ULTRASONIC SENSOR
The main aim of this project is to assist the blind persons without the human need. It is well known that the blind people carry a hand stick with them whenever they need a support. Sometimes even when they use this stick, there is no guarantee that the blind persons are safe and secured in reaching their destinations. There may be an obstacle in their path but is not encountered by the person with the help of the stick. Thus, the people may be injured if the obstacle is big enough or dangerous. Thus, a design has been developed to assist the blind and provide them a clear path.
The system consists of ultra sonic sensor fixed to the user’s stick. While the user moves the stick in the forward direction, the ultrasonic sensor fixed to the stick tries to detect the obstacle if any present in the path. If the sensor detects the obstacle, the output of the receiver triggers and this change will be detected by the microcontroller since the output of the receivers is given as inputs to the microcontroller. Thus, the microcontroller immediately alerts the buzzer as soon it receives the triggered output from any of the sensors. Thus, the user can change the direction of the stick, in any other direction to avoid any kind of injury, as soon the buzzer is activated. The entire controlling unit will be fixed to the hand stick.
The system not only gives the buzzer sound with the same intensity but it gives the sound which depends on the distance between the user and the obstacle. We can even add the voice module which can give the messages that depicts the distance of the obstacle from the user.
SOFTWARE AND HARDWARE TOOLS:
- Keil compiler
- ULTROSNIC SENSOR
- BUZZER (OR) VOICE MODULE